Truthear Hexa VS Letshuoer S12 Ultra

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Legendary Series kickoff: Truthear Hexa gets a “legacy” deep-dive with a community poll deciding its status—60% yes votes puts it on a Hall-of-Fame list; otherwise it’s a “legendary failure.” Notable praise exists: Super* Review gave a rare five-star, Resolve called it “insanely good”, and Crinacle rated it A+ for tone and B for tech, on par with far pricier favorites. The review asks a single question throughout: is Hexa truly legendary, merely noteworthy, or just another competent IEM?

Build and kit are a mixed bag. The shell pairs a smoky resin body with a black metal faceplate and a comfortable, compact fit; the recessed 2-pin means flat-pin cables won’t seat properly. The stock tips are excellent and genuinely useful, but the cable feels thin, tangles easily, and the channel markings are hard to read; the case is serviceable but plain. Overall presentation: solid shell, great tips, forgettable cable and case.

Sonically, Hexa presents neutral-leaning tonality with airy, detailed upper mids—sparkly, airy, dreamy—and a measurement curve that looks “right,” yet in-ear performance exposes anemic bass and limited slam/dynamics. Technicalities are decent rather than class-leading; staging isn’t the holographic showcase some might want. Comparisons note Truthear Nova (more bass but hot upper-mids), and alternatives like AFUL Explorer, Moondrop Aria 2, and other well-tuned planars as potentially stronger all-rounders depending on taste. Final take: a respectful 7/10—tonally appealing and special in ways, but not personally crowned legendary; the community vote makes the call.

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LETSHUOER S12 Ultra wraps up the S12 line with a 14.8 mm planar driver and a familiar metal shell in gunmetal or mocha. The housing is vented, comfy for long sessions, and solidly built with a flat 2-pin interface that grips tips well. The stock package is practical: a soft case, a fair tip spread, a braided cable with swappable 4.4 mm termination, and even a plug-and-play USB-C DAC that performs capably for on-the-go use.

Sonically, this set aims for a mild V-shape with tasteful tweaks that elevate it over prior S12 iterations. There’s a touch more sub-bass than the S12 Pro and a smoother 10 kHz zone, reducing fatigue while keeping upper-treble reach for air. The presentation favors balance over sparkle: detailed without the brittle edge many planars flirt with, and notably non-fatiguing over longer listens. Technical chops are strong for the class—clean, clear, and “planar-fast”—though instrument separation can lag behind pricier hybrids, and the topmost “crispy” sheen is slightly restrained.

On graphs and in practice, S12 Ultra reads as a refined take on modern planars—more bass weight, tidier 4–6 kHz, and better treble behavior than its siblings. Listeners hypersensitive up top may still prefer something like the S15 for a softer treble contour, while those chasing maximal separation may lean to sets like AFUL Performer 7 (with a spicier treble). With the usual planar caveat about unit variance and fit, this edition comes through as the standout of the S12 series: a clean, engaging, and genuinely high-value recommendation under $500.

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The Letshuoer S12 Ultra comes through as the smoothest tuning in the S12 family— a sub-bass boosted all-rounder with quick transients and satisfying rumble that makes pop, hip-hop, and EDM notably fun. Technical performance sits around earlier S12 variants, but treble detail is dialed back a touch versus the OG/Pro in exchange for a more natural timbre and less “planar-bright” edge. It’s the bassiest S12 to date, hitting with better texture, impact, and extension, while keeping imaging crisp enough to stay engaging rather than clinical.

Tuning tweaks tame the upper range: a cut past 1.5 kHz and an 8–15 kHz dip ease shout and sibilance, with air returning via a lift around 15 kHz. Vocals sit a bit pulled back and the treble is the least energetic of the series, which helps long-session comfort—though brighter, heavily produced tracks or songs with little low-end can still sound peaky if pushed. Best results come at ~65–70 dB; tip-roll toward clear or bass-supporting tips to smooth the top and reinforce the lows, while avoiding brightening tips that exaggerate energy.

Versus peers, S12 Ultra feels like a bassier, less shouty take on Supermix 4/Nova and a slightly more V-shaped, punchier alternative to Defiant. It’s not a value monster for sheer detail compared with cheaper planars (T10, F1 Pro, etc.), but the payoff is a presentation that’s more musical, smoother, and easier to live with. For listeners wanting added slam without losing the S12’s speed and airy sense of space, this version offers the most enjoyable balance in the lineup.

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Truthear Hexa targets the sweet spot at $80 with a hybrid 1DD + 3BA array and a tuning that hugs a neutral reference. Build is clean and understated: metal faceplate over a translucent 3D-printed shell, compact “medium-small” footprint, and a straight 6.2 mm nozzle that holds tips securely. The stock cable isn’t flashy but handles beautifully, and the lightweight set fits securely and comfortably—easy ingress/egress, even sleep-friendly. Accessories are simple but useful (soft pouch, multiple silicone sets, foam tips).

Sonically, this is genuinely neutral with a light sub-bass lift for body, centered vocals, and treble that’s smooth yet well-extended without plasticky BA glare. Cymbals and brushes have convincing timbre, micro-detail is respectable, and imaging is solid for the price (not exaggerated). Bass quantity sits in a Goldilocks zone—never boomy—though the attack is a touch soft, trading incisiveness for ease. Technical performance overachieves for the bracket, but it’s not a giant-killer; and that neutral tonality won’t flatter weak recordings.

Contextually, Hexa’s tonality edges out close rivals: more warmth than ER2XR’s leaner lower mids, smoother and more natural treble timbre than Legacy 4 (which answers back with snappier bass texture and punchier separation), and less incisive but more extended top-end than Blessing 2, which still leads in midrange resolution and imaging sharpness. Aggregate take: five stars for value and tuning coherence—an easy recommendation at this price for listeners aligned with a neutral, mid-focused, clean presentation and a comfortable, compact fit.

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Truthear Hexa brings a clean, neutral presentation in a sturdy, smoky shell where the drivers are visible. The fit is slightly larger than some rivals but still comfortable, with solid build integrity at the price. Accessories are generous—familiar Truthear cable (similar to the Zero), a pouch, and multiple tip options—though the cable feels a step below premium inclusions elsewhere.

Sonically, Hexa focuses on micro detail, clarity, and coherence, delivering more revealing male/female vocals than warmer sets. For gaming, it shines with precise imaging, depth, and verticality—excellent directional audio for tactical cues—while remaining composed in busy scenes. In close-quarters maps a warmer set like Dunu Kima can feel more “atmospheric,” but Hexa’s neutrality keeps separation crisp; in open-world/Battle Royale scenarios it’s confidently competitive and sits near the Zero in overall positional performance. At around $80, it’s an easy add to the budget recommendation list for music, casual play, and competitive gaming alike.

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Final revision of the series brings a very coherent, slightly warmer presentation with treble pulled into safer territory and mids that feel a bit weightier. Ultra sits between the smoother S08 and the rawer S12 Pro, and it comes across a touch bassier than the graphs suggest. As a single-driver planar, it retains solid resolve and a natural, easy tonality that will suit most listeners, especially at the 169 price point.

Despite graphs looking similar to S12 2024, Ultra sounds smaller and flatter, with less transparency and dynamics. Soundstage is mainly left-right; height and depth are curtailed, so placement is not always in the right place on more spacious tracks. The smoother top end avoids harshness and makes long sessions comfortable, but the trade-off is reduced sparkle and air versus the 2024 tuning.

Versus budget planar standouts like KZ PRX, Ultra is a clear, smoother upgrade; versus S12 2024, it is the safer all-round pick but not as open or exciting. Dense mixes can nudge the bass toward a slight bloom and compress the center image. For most, this is the one S12 to buy; stage and transparency chasers may still prefer the 2024 version.